Adding priceImpact property

[lamman1820]

Dear Author,

Can you add the priceImpact property into the Trade information?

Regards

[joshstevens19]

it's on the list will get round to this when I can! thanks

[niZmosis]

I'd love this. It would allow me to assist the users with slippage for deflationary/fee tokens to prevent failed swaps as they require a higher slippage than normal.

[yalamber]

Thank you for this nice library, was price impact added to it, could not find it in examples.

[vm06007]

Also curious if price impact is available @joshstevens19 / @liu-zhipeng or is planned by any chance? Most likely its not implemented yet if I'm not mistaken

[vm06007]

Alternatively if the trade object could return reserves for each pool involved (depending on the route) this could be calculated accordingly to user input without refetching data?